Tag: infrared

The Auracle team presented an innovative new technique for interacting with wearable devices, during the UIST conference last week.

Abstract: We present Pyro, a micro thumb-tip gesture recognition technique based on thermal infrared signals radiating from the fingers. Pyro uses a compact, low-power passive sensor, making it suitable for wearable and mobile applications. To demonstrate the feasibility of Pyro, we developed a self-contained prototype consisting of the infrared pyroelectric sensor, a custom sensing circuit, and software for signal processing and machine learning. A ten-participant user study yielded a 93.9% cross-validation accuracy and 84.9% leave-one-session-out accuracy on six thumb-tip gestures. Subsequent lab studies demonstrated Pyro’s robustness to varying light conditions, hand temperatures, and background motion. We conclude by discussing the insights we gained from this work and future research questions.

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About the name

Our project name, Auracle, blends 'aural' with 'oracle' to evoke the notion of an ear-worn device that infers things about its wearer.

Acknowledgements

Text and images on this site are copyrighted material, with copyright held by Dartmouth College or by the author of each blog post. University logos are trademarks of their respective university and are used by permission. This research program is supported by the National Science Foundation (NSF) under award numbers CNS-1565269 and CNS-1565268. The views and conclusions contained on this site are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of NSF. Any mention of specific companies or products does not imply any endorsement by the authors or by the NSF.